公开(公告)号：DE10145439A1

公开(公告)日：2003-04-03

申请号：DE10145439

申请日：2001-09-14

Applicant: BASF AG

Inventor： FALKE PETER ,  KNORR GOTTFRIED ,  SEIFERT HOLGER

IPC: C08G18/48 ,  C08G18/76

Abstract: Polyol mixtures (b) for the production of retarded polyurethane foam comprise (b1) di- to octa-functional polyether-ols (OH number = 200-1300 mg KOH/g) based on ethylene oxide (EO) and optionally propylene oxide (PO) and/or butylene oxide (BO) (more than 30 wt% EO) and (b2) polyether-ols (OH no. = 100-1000) based on PO and/or BO and optionally up to 30 wt% EO. A method for the production of retarded polyurethane foam by reacting: (a) optionally modified polyisocyanates; (b) a polyol mixture and optionally; (c) other isocyanate-reactive compounds in presence of; (d) water; (e) catalysts; (f) fire retardants; (g) blowing agents; and (h) optionally other additives The polyol mixture (b) comprises (b1) di- to octa-functional polyether-ol(s) based on ethylene oxide (EO) and optionally propylene oxide (PO) and/or butylene oxide (BO), with an EO content of more than 30 wt% based on total alkylene oxide and an OH number of 200-1300 mg KOH/g, and (b2) polyether-ol(s) based on PO and/or BO and optionally EO, with an EO content of not more than 30 wt% and an OH number of 100-1000. An Independent claim is also included for reaction-retarded polyurethane foam obtained by this method.

公开(公告)号：ES2175980T3

公开(公告)日：2002-11-16

申请号：ES99923570

申请日：1999-05-10

Applicant: BASF AG

Inventor： REICHELT MICHAEL ,  ROTERMUND UDO ,  HEMPEL RENATE ,  FALKE PETER ,  VON MALOTKI PETER ,  SEIFERT HOLGER

IPC: C08G18/10 ,  C08G18/48 ,  C08G18/50 ,  C08G18/76 ,  C09K3/10

Abstract: Prepolymers which contain isocyanate groups, have an NCO content of at least 30.0% by weight and can be prepared by reacting an isocyanate mixture consisting predominantly of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates and having a proportion of two-ring isomers of not more than 74% by weight with at least 4-functional polyols or a mixture of polyols having a mean functionality of at least 4, where the polyols or polyol mixtures have a hydroxyl number of from 200 to 1650 mg KOH/g and a number average molecular weight of less than 1100 g/mol. The present invention also provides a process for preparing these prepolymers containing isocyanate groups, provides for their use for producing polyurethanes and provides a process for producing polyurethanes by reacting at least one novel prepolymer containing isocyanate groups, if desired in admixture with further organic and/or modified organic isocyanates (a), with compounds having at least two reactive hydrogen atoms (b) in the presence of, if desired, blowing agents (c), catalysts (d) and, if desired, further auxiliaries and/or additives (e).

公开(公告)号：MX199574B

公开(公告)日：2000-11-16

申请号：MX9707293

申请日：1997-09-24

Applicant: BASF AG

Inventor： ROTERMUND UDO ,  HEMPEL RENATE ,  SEIFERT HOLGER ,  WIEGMANN WERNER

IPC: C08J9/12 ,  C08G18/06 ,  C08G18/48 ,  C08G18/50

公开(公告)号：DE19823393A1

公开(公告)日：1999-12-02

申请号：DE19823393

申请日：1998-05-26

Applicant: BASF AG

Inventor： REICHELT MICHAEL ,  ROTERMUND UDO ,  HEMPEL RENATE ,  FALKE PETER ,  MALOTKI PETER VON ,  SEIFERT HOLGER

IPC: C08G18/10 ,  C08G18/48 ,  C08G18/50 ,  C08G18/76 ,  C09K3/10 ,  C08L75/04

Abstract: The invention relates to prepolymers which contain isocyanate groups and which can be produced by reacting an isocyanate mixture, said mixture being predominantly comprised of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanates, with a maximum proportion of two-core isomers of 74 wt.% with at least 4 functional polyols or with a mixture of polyols having an average functionality of at least 4. The polyols or polyol mixture comprise(s) a hydroxyl value ranging from 200 to 1650 mg KOH/g and an average molar mass of less than 1100 g/mol with an NCO content of at least 30.0 wt.%. In addition, the invention relates to a method for producing these prepolymers which contain isocyanate groups, to their use for producing polyurethanes, and to a method for producing polyurethanes by reacting at least one of the inventive prepolymers which contain isocyanate groups, optionally mixed with additional organic and/or modified organic isocyanates (a), with compounds having at least two reactive hydrogen atoms (b) in the presence of optional expanding agents (c), catalysts (d), optional additional auxiliary agents and/or additives (e).